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The expression is 2x7·5x2

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= 2  · 5 · x7·  x2          (Apply commutative property of multiplication: a × b = b × a)

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Since base is common,apply the product of powers property: am·an= am + n.

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= 2  · 5 · x7 + 2

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= 2  · 5 · x9                 (Add exponents: 7 + 2 = 9)

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= 10x9                        (Multiply: 2 × 5 =  10) \"\"

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The product of  2x75x2 is 10x9.